Mechanical time fuse with clockwork



Selm 11,1928. 1,684,354

P. LIEBERGELD MECHANICAL TIME FUSE WITH CLQCKWORK Filed oct. 6, 1927 2 sheets-sheet 1 Figi.,

Sept. 11, 1928.

LIEBERGELD MECHANICAL TIME FUSE WITH CLOCKWORK Filed oct.. 6, 1927 z'shets-sheet 2 Patented sept. ii, 192s. L

:anun LIEBERGELD, or Bim THAI), GERMANY. ff i ivinonanicai. milan rusiiwirn Ctocirwonk.

.application 'filed 'otoiqr 6, i927, serial No. 224,425, ami in Germany toctober'sjfieae; f

' This invention relates to a mechanical time-fuse with clockwork and a ring designed to regulate the running time of the clockwork and rotatable with regard to the fuse-casing, said ring having Yan aperture for releasing the fuse. In fusesofY known type a pointer is Ymounted on the main axle of the clockwork shiftable in longitudinal direction designed toY come into engagement with the aperture of the ring for determining the time and bearing with friction on this ring when the clockwork is running off. Owing to the unavoidable clearance between the pointer and the axle of the clockwork, vibrations of the pointer occur, which influence unfavourably the accuracy of the releasing of the ignition. u This inconvenience is avoided, according to the invention. by fixing the pointer rigidly on the axle of vthe `clockwork and by mounting on the same a .spring-controlled pointer-pin which after expiration of the 'predetermined ignition- A time engages with the aperture ot the ring for determining the ignition-time, whereby the ignition is released. j

An embodiment of theninvention is illustrated, by way of example, in the accompanying Vdrawing which shows also an arrangement according to which the springcontrolled pointer-pin and the locking elenient ot' the locking for transport hold the one the other in the position for transport i .viewed from the left.

Fig. 1 shows in longitudinal section the l'use in the position for transport. Fig. 2 is a section on line A-B of Fig. ,1 viewed from above.`

Fig. 3is a section. on line E--Fv of Fig. 2

` Fig.l 4 shows a portion of a longitudinal section corresponding tothat in Fig. 1, the elements being in the position after releasing the ignition, the ring for determining Y thetime being in another angular position.

'frio' J Fig. 5 is a top plan view of Fig. 4.

5, viewed from the left. f The rameof the clockwork is fixed, in mannerknown per se, in the fuse on the fuse-body 13, on which the outer adjusting cap 14 is rotatably mounted. In thepointer 2, rigidly mounted onY the main axle 1 of the clockwork, a. pointer-pinV 4, controlled by a spring 3 is arranged so that itcan be shifted in longitudinal direction. On the clockwork-frame a ring 6 for determining the Fig. 6 is a sectionon line G-IH of Fig.

it caiibe shifted in longitudinal direction and serving for locking in the transport position, has an annular groove 8a with which engages a set off portion 9 of the pointerpin 4 under the* action of .the woundup clock-spring so that, as shown in Figs. 1 to 3, the pins 8 and 4 securely'hold, the onel the other lin the position for transport. During the iringthe pin8, which forms the locking element for the position or transport, assumes the position shown in Figs. 4 to '6, whereby the clockwork is released and the pointer-pin 4liberated. During the running time of the clockwork the pressure ol' spring 3, against the inner surface of the time determining ring`6. "TheA shaft 42l of the pointer-pin 4 rests then, same as when the Jfuse is in the state for transport',

head of the pointer-pin 4 is pressed, by the on a. cap 11 which is spring-controlled and' locks the ignition device A10. Assoon as the pointer-pin 4 has assumed the angular position facing the aperture 7 of ring 8 in accordance with the adjusted time, the pointerpin 4 jumps under rthe action of thespring. 3, the pointer 2 being passing along the Aaperture 7, through this aperture so that it moves away from the cap A'which, under the action of a spring 12, ispushed up and releases the fuse-mechanism 10 which is of a generally known construction so that the primer is struck.

' I claim l f 1. A mechanical" time-fuse Vwith clockwork and with a ring for determining the lu'singtime rotatable vwith regardv to` the fuse-casing and vhavingan Vaperture Jfor Areleasing the fuse, comprising in combination with a main axle of the clockwork a pointer vrigidly fixed. on the. main axle of said clockwork, ya spring-controlled Apointer-pin shiftably mounted iiisaid pointer so that, Vwhen at the predetermined moment, itiarrives at the aperture of said time-determining ring, it 'projects through thisaperture andliberates the fuse-mechanism. f f

v2. A mechanical time-fuse as specifiedin claim 1, a locking element. torv lockingthe l-lO l,tiIne-fuse-mechanism in the position for transport, said locking element being held in its locking position b y said pointer-pin. 3Q In a mechanical time-fuse' as vspecified vin claim 1, a looking element for locking the vtiIne-fuse-mechanism*in ythe position for transport, said. locking. element being heldin its locking position by said point-erepin `and Said pointer-pin being held in( the locking position by saidv locking element.

4. 'A mechanical ,time-fuse las specified in claim '1, comprising in combination with the clockwork-frame and the pointer-pinliaying a set-oilv portion, a locking pin loosely mounted in said clockwork-frame so that 1t can be shifted inlongitiidinal direction anch. 'l having an annular groove, and a clock-Work-Y` spring for Aholding said pointer-pin in such',v

position that said set-off portion of saidpointer-pin and said 4 annular groove of' said 'locking pin securely'hold the onethe other inthe lockingposition for transport.'V Y

' In testimony whereof I have-hereunto setl my.v hand.

^ 'y PAUL LIEBERGELD.; 

